Android Marshmallow SMS screen toolbar showing both Contact Name & Contact Number ,

Android Marshmallow screen Toolbar (Titlebar ) showing both Contact Number and Contact Name ,I only want to show the Contact Name ? is it possible ?
How can I do this ?

from Android Forums at AndroidCentral.com - Ask a Question //forums.androidcentral.com/ask-question/758059-android-marshmallow-sms-screen-toolbar-showing-both-contact-name-contact-number-new-post.html
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